A tattoo black tattoo on the skin reached progress after 12 sessions over 3 years.

Before (session 0) and after (session 12) at treatment.
The tattoo
A medium black tattoo on the skin.
Timeline
12 sessions over 3 years.
The laser
The Switch is a nanosecond Q-switch platform.
For black ink, it operates at 1064 nm with a pulse duration of 10 ns.